A fruit stall had 5 times as many mangoes as starfruits. After 8 mangoes were added, the number of mangoes became 20 more than the number of starfruits. How many starfruits were there at the fruit stall at first?
| |
Mangoes |
Starfruits |
| Before |
5 u |
1 u |
| Change |
+ 8 |
|
| After |
5 u + 8 |
1 u |
If another 8 starfruits are added, the number of mangoes and starfruits will be the same.
5 u + 8 = 1 u + 20
5 u - 1 u = 20 - 8
4 u = 12
1 u = 12 ÷ 4 = 3
Number of starfruits at the fruit stall at first
= 1 u
= 3
Answer(s): 3
